refactored all script : replaced onupdate by onbeforeupdate (red more about lifecycle in mithrile)

assets/dist/main.css

@@ -750,8 +750,18 @@ html, body {
   margin: 0;
   padding: 0; }
 
-header > * {
-  display: inline-block; }
+header {
+  position: fixed;
+  width: 100%;
+  top: 0;
+  z-index: 5; }
+  header > * {
+    display: inline-block;
+    vertical-align: top; }
+    header > *:first-child {
+      margin-left: 1em; }
+    header > *:last-child {
+      margin-right: 1em; }
 
 aside#menus {
   float: right; }
@@ -764,14 +774,11 @@ aside#menus {
       text-decoration: none;
       color: inherit; }
 
-#app {
-  position: relative;
-  text-align: center;
-  margin: 0 auto; }
-
 main#content {
-  display: inline-block;
-  text-align: left; }
+  margin: 3em auto;
+  width: 450px; }
+  main#content > * {
+    width: 450px; }
 
 h1.part {
   font-size: 1.6em;
@@ -812,4 +819,10 @@ section.enonce {
         padding-left: 2em;
         border-left: 1px solid #999; }
 
+footer {
+  position: fixed;
+  bottom: 0; }
+  footer > * {
+    margin-left: 1em; }
+
 /*# sourceMappingURL=main.css.map*/